provide new solution implementation based on feedback on PR

thefuck/rules/git_branch_0v_to_dash_v.py

@@ -1,13 +1,36 @@
 from thefuck.shells import shell
 from thefuck.specific.git import git_support
+from thefuck.utils import memoize
+
+'''
+keys are fatfingered entry, values are two-element tuples
+where the first element is "the fix" and the second element
+is "what you meant to do
+ '''
+# clunky when there's only one key, but as others get added, I _think_
+# this will be cleaner
+flags_and_their_fixes = dict()
+flags_and_their_fixes["v"] = ('git branch -D 0v', 'git branch -v')
+
+
+@memoize
+def _supported_flag_fix(command):
+    flag = command.script_parts[2:][0]
+
+    if len(flag) == 2 and flag.startswith("0"):
+        return flags_and_their_fixes[flag[1]]
+    else:
+        return None
 
 
 @git_support
 def match(command):
     return (command.script_parts
-            and command.script_parts[1:] == 'branch 0v'.split())
+            and command.script_parts[1] == 'branch'
+            and _supported_flag_fix(command) is not None)
 
 
 @git_support
 def get_new_command(command):
-    return shell.and_('git branch -D 0v', 'git branch -v')
+    fix_parts = _supported_flag_fix(command)
+    return shell.and_(fix_parts[0], fix_parts[1])